Molding-machine.



No. 727,900. PATENTED MAY 12, 1903.

B. B. CARTER & F. J. STRATTON.

' MOLDING MACHINE.

No. 727,900.- PATENTED MAYlZ, 1903.

B. B. CARTER & -F. J. STRATTON.

MOLDING MACHINE.

APPLICATION FILED APR. 16, 1900.

3 SHEETS-SHEET PATENTED MAY 12, 1903. a B. B. CARTER & P. J. S-TRATTON.

MOLDING MACHINE.

APPLIOATION FILED APR.'16, 1900.

3 SHEETS-SHEET 3.

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UNITED STATES.

PatentedMay 12, 1903.

PATENT OFFICE.

BYRON B; OARTER'OF'HINSDALE, AND FRANK J. STRATTON, oF GROSS- DALE,iLLINoIs.

'MOLIDINQ- .MACHI'N E.

SPECIFICATION forming part of Letters PatentNo. 727,900, dated May 12,1903.

7 Application filed April 16, 1900. Serial No. 13,011. (No model. i v

To all whom it may concern.-

Be it known that we, BYRON B. CARTER, a resident of Hinsdale, in thecounty of Dupage, and FRANK J. STRATTON, a resident of Grossdale, in thecounty of Cook, State of Illinois,

citizens of the United States, have invented an adhesion between theflask and stripper-plate.- A molding-machine of our invention con--sists of the various features, combinations of features, and details ofconstruction hereinafter described and claimed. 1 s 1 In theaccompanying drawings a moldingmachine of our invention is fullyillustrated.

Figure 1 is a rear elevation of a molding machine of our invention. Fig.2 is anend view thereof. Fig. 3 is a top plan view thereof, thestripper-plate being-removed. Fig. 4 is an enlarged sectional view ofthe cylinder. Figs. 5, 6,.and 7 are enlarged views of the cock whichcontrols the delivery of fluid-under pressure to the cylinder, and Figs.8 and 9 are enlarged detail views.

The frame of our improved molding-machine consists of a suitable base A,in which are secured upright rods or standards A, to which thestripper-plate A is secured in any desired or approved manner. Locatedbeneath the stripper-plate A and freeljiimovable toward and fromsaidstripper-plate on suitable guides, is thepattern-carrying head.

B, which, asshown, consists of a plate B, removably secured to a frame13*.

A, to which are fitted suitable bearings in the frame B V B represents apattern supported in operative position on the pattern-plate B.

As to the foregoing features the'c'onstruction of our improvedmolding-machine is old and well known and will be readily andfully 5ounderstood by a person familiar with the art t'u'rnbuckles" 0 0respectively. thus 'madefor adjusting the relatively angu- As'shown, theguides for the pattern-carrying head'in its movement toward and from thestripperplate A are formed. by the rods or standards from an inspectionof the drawings and without a more detailed description thereof.Movement toward andfrom the stripperplate'A is imparted to thepattern-carrying head B by means of suitable operative connection withshafts O, revolubly mounted in the machine-frame. shafts C, which extendtransversely of the machine adjacent to the ends thereof and areconnected by means of 'a rod 'C,-pivotally connected to cranksc, keyedor otherwise rigidly se'cured toxs'aid'shafts 0. Movement of eithershaft willthus imparta-correspond- .ingmovement to the other, therelation and adjustment of parts being such'that the angular movementjofsaid shafts will be the same.

In the preferable construction shown the pattern-carrying-head ;B isconnected to the shafts O by means of toggles C the upper members ofwhich are pivotedto saidhead, and the lower members of which are keyedto said shafts O. Oscillation of said shafts will thus operate in anobviousfmanner to flex and straightensaid toggles O and thus toimpartmovement to said pattern-carrying head B toward and fromthe'stripper-plate A Formed on the hubs of the lower toggle members areshoulders Of, which p'r'oject ben'eath the flange of the base A, formingstops to, limit the pivotal movement of the shafts O to positionscorrespondili g to the extreme eleyation and depressionof thepattern-carrying head. As preferably constructed, also,

the rod 0 and the upper members of the toggles (J are-made insectionsconnected by Provision is 1m. positions of the shafts'C and thelengths .of. the toggles 0 within limits, thus providing means formaintaining the pattern-carryinghead B level and treme elevation. 7

Our improved machine is adapted to be operated either by hand-=orbyfpower: The means for operating said machine by hand consist of ahand-lever D, adapted tobe detachably engaged with a suitable holeformedin a hub or collar 01, rigidly secured to one of the shafts C.

The means for operating the machine by for adjusting its ex- As shown,there are two power consist of a motor comprising a cylinder E and apiston E fitted thereto, the piston-rod E of which is applied to one ofthe shafts C, so that reciprocation of said piston will impart anoscillatory movement to said shaft 0. In the preferable constructionshown the cylinder E is pivoted upon one of the shafts (J, and the outerend of the pistonrod E is pivoted directly to a crank e, secured to theother shaft 0. A simple and cheap form of cylinder consists of a sectionof tube, to the ends of which are secured heads E E The head E may andpreferably will be so]- dered or otherwise permanently secured to thecylinder E, and formed thereon is a transverse sleeve 6, the bore ofwhich is fitted to the end of the shaft 0, thus forming the desiredpivotal connection thereto. Said sleeve 6' is maintained in positionupon said shaft 0 by a collar 6 and a stud-bolt e threaded into saidshaft. The head E is removably secured to the cylinder E, beingpreferably threaded thereto. To maintain a tight joint between thecylinder E and the cylinder-head E a suitable packing is provided. Asshown, said packing consists of what may be designated as a gasket Epreferably leather, secured to the inner surface of said cylinderhead,the edges of which project sufficiently to be clamped between the end ofthe cylinder E and the inner face of said cylinderhead E when saidcylinder-head is secured to said cylinder. As shown, the gasket issecured in proper position on said cylinder-head by means of a disk E,bolted to said cylinder-head, between which and said cylinder head saidgasket E is clamped. Around the piston-rod E the gasket is cupped, asshown at 6 a hole being formed in the disk E sufficiently large to allowfluid under pressure free access to the exterior of the cupped portion aof said gasket E thus forming a piston-rod packing. Formed on thecylinder-head E is a sleeve 6 in which is formed the bearing for thepiston-rod E said sleeve being long enough to provide a bearing ofdesired length for said piston-rod.

A shield E secured to the cylinder-head E extends over the piston-rod F.and prevents sand from falling thereon during the formation of the mold.In the preferable construction shown the cylinder-ports e e are formeddirectly in the cylinder'heads E E In practice we prefer to usecompressed air for operating our machine; but any other medium, assteam, water, or the like, may be used.

In the preferable construction shown the admission and discharge offluid under pressure to and from the cylinder E are controlled by meansof a suitable cock F, the casing of which comprises four branchesfff fwhich communicate with the bore of the casing of said cock in which theplug of said cock is seated through ports or openings f between whichare lands f Opposite the ports of said cock the plug is cut away, asshown at f f, in

such manner that the ports to the branches ff may be brought intocommunication with the ports to the branches ff by properly rotating theplug of said cock, the relation and adjustment of parts being such thatwhen the port to the branch fis in communication with the port to thebranch f the port to said branch f will be cut off from the port to thebranch f while the port to the'branch f will be in communication withthe port to the branch f and will be cut olf from the port to thebranch)", and vice versa. The ports to the branches ff are not designedto communicate with each other at any time. Stops f on the casing of thecock project into the path of travel of a lug f" on the plug of the cockand operate to limit the pivotal movement thereof, one extreme positionof said plug efiecting full com munication of the port to the branch fwith the port to the branch fand of the port to the branch f with theport to the branch f and the other extreme position of said plugeffecting full engagement of the port to the branch f with the port tothe branch f and of the port to the branch f with the port to the branchf The plug of said cock F is operated by means of a hand-lever F,secured to the end thereof. The branch f of the cock F is connected witha source of supply of fluid under pressure. (Not shown.) The branch f isthe discharge or exhaust branch thereof. The branchesff are respectivelyconnected with the ports 6 e of the cylinder E. As shown, theconnections between said cock F and the cylinder-ports comprise pipes fwhich extend to the end of the machine, and flexible tubesf, whichconnect said pipesf with the branches ff of the cock F. In thepreferable construction shown also the cock F is secured to thepattern-carryingheadBin position such that the hand-lever F may beconveniently grasped by the machine operator. The flexible connectionsfprovide for desired vertical movement of the pattern-carryingheadBandforpivotal movementof the cylinderE without wrenching theconnections between said cock F and the cylinder E. Preferably, also, apetcock F is secured in the discharge or exhaust branch f of the cock F,thus providing convenient means for regulating the size of thedischarge-opening and the escape of the fluid from the cylinderE inorder to preventthe pattern-carrying head from being raised or loweredtoo rapidly under the influence of the fluid under pressure admitted tosaid cylinder.

Buffer-springs G, inserted between the pattern-carrying head B and thebase A of the machine, and preferably around the rods or standards A asguides, operate in a familiar manner to stop the pattern-carrying head Bgradually as it approaches the lower limit of its movement, thuspreventing jarring and shock to the parts of the machine. Said springs Gare made sufficiently strong to raise the pattern-carrying head B andthe parts carried thereon through a portion of its travelindependentlyof the toggles O Said springs will thus operate in an obvious manner toprevent said toggles from becoming locked should they be flexed at toogreat an angle.

As illustrated, a section H of a flask, either the drag or the cope, issupported upon the stripper-plate A being secured in operative positionthereon bydowel-pins h in the usual manner. As preferably constructedour improved molding-ma'chine comprises means for slightly raising thesection of flask H, as the pattern-carrying head B descends, to breakthe adhesion between said section of flask and the stripper-plate, thusfacilitating the removal of said section of flask. As shown, the meansfor so raising said section of flask consist of rods H, which arelongitudinally movable in. suitable bearings formed in the base A of themachine and in the stripperplate A the upper ends of which are adaptedto be brought into contact with the section of flask H when said rodsare raised and the lower ends of which are in the path of travel ofprojections on the shafts C. As shown, said projections on said shafts 0consist of the stop-shoulders C on the hubs of the lower members ofthetoggles C the relation of parts being such that said stops C willstrike the lower ends of said rods H just before the pattern-carryinghead 13 reaches the lower limit of its movement and will raise saidrods, so as to lift said section of flask H a desired distance. Pins h,secured in said rods and adapted to rest on a rigid portion of themachine-frame, maintain said rods inoperative positions.

1. In a moldingahaohine, the combination of a stripper-plate, apattern-carrying head,

guides on which said pattern-carrying head is movable toward and from.said stripperplate, a shaft or shafts revolubly mounted in themachine-frame, operative connection between said shaft or shafts and thepatterncarrying head whereby rotation of said shaft or shafts willimpart movement to said' pattern-carrying head toward and from thestripper-plate and means to rotate said shaft or shafts, said meanscomprising a pivoted cyl-' inder and a piston fitted theretothe-pistonrod of which is pivoted to a crank secured to anactuating-shaft, and means under the con-' trol of the operator foradmitting fluid under pressure to and exhausting it from said cylinder,substantially as described.

2. Ina molding-machine, the combination of a stripper-plate, apattern-carrying head, guides on which said pattern-carrying head ismovable toward and from said stripperplate, a shaft or shafts revolublymounted in the machine-frame, operative connection between said shaft orshafts and the pattern carrying head whereby rotation of said'shaft orshafts will impart movement to said pattern-carrying head toward andfrom the stripper-plate and means to rotate said shaft or shafts, saidmeans comprising apivoted cylinder, a piston fitted thereto .thepiston-rod of which is pivoted to a crank secured to an actuating shaftand a manually-operated valve which controls the admission of fluid.under pressure to said cylinder and its exhaust therefrom,substantially as described.

3:. In a molding-machine, the combination of a stripper-plate, apattern-carrying head,

guides on which said pattern-carrying head inder, a piston fittedthereto the piston-rod of which is connected to a crank'secured to anactuating shaft, a manually operated valve and flexibleconnectionbetween said valve and said cylinder, substantiallyas described.

4. In a-molding-machine, the combination witha stripper-plate,apattern-carrying head, guides on which said pattern-carrying head ismovable toward and from said stripperplate, means to impart movement tosaid pattern-carrying head toward and from said strip-.-

per-plate, said means comprising toggles applied to saidpattern-carrying head and means to flex and straighten said toggles, ofstopshoulders-on the hubs of the lower members I of said toggles whichextend under rigidportions ofthe machine frame'and lifting-rodslongitudinally movable in suitable bearings in the base of themachine-frame and in the stripper-plate, the-lower ends of which are inthe paths oftravel of said stop-shoulders on the hubs of the lowertoggle members so as to be raised thereby when the pattern-carrying headreaches the lower limit of itsmovement, substantially as described.

5. .In a molding-machine, a frame having upturned sides to constitute astripper-plate support, two parallel operating-shafts mounted on thelower part of the frame, adjustable 1 means to rock said shafts inunison in oppo-- site directions;- a pattern-carrier verticallyslidableon the frame, and connections between the pattern-carrier andthe-operatingshafts, eccentrically connected 'With the latter, to raiseand lower the pattern-carrier by rocking movement of theoperating-shafts,

said connections being independent of the means for rocking the shafts.

In testimony that we claim the foregoing as our invention we havehereunto set ourhands this 9th day of April, 1900.

' BYRON-B. CARTER.

Witnesses:

PERCY B. HERR, H. O. CHASE.

FRANK .I. STRATTON.

